Timer



FIG. 1 is a top perspective view of a timer according to our design;

FIG. 2 is a top view of our design;

FIG. 3 is a front view of our design;

FIG. 4 is a right side view of our design;

FIG. 5 is a left side view of our design; and,

FIG. 6 is a back view of our design.

The broken lines shown in the drawings are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a timer, as shown and described. 